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(No ModeL) 2 Sheets-Sheetl. O. W. OROSSLBY.

APPARATUS FOR THE PROPULSION, MOVEMENT, AND SUCTION OF AIR, FLUIDS, ANDGASES.

No. 336,215. Patented Feb. 16, 1886.

(No Model.) v 2 Sheets-Sheet 2. O. W. OROSSLEY. APPARATUS FOR THEPROPULSION, MOVEMENT, AND SUCTION OF AIR,

FLUIDS,AND GAsEs.

Patented Feb. 16, 1886.

vmiaz zmmzc a 620%(57 curved so that they approach still nearer toUNITED STATES CLARENCE lVlLLIAM GROSSLEY, OF

PATENT OFFICE.

LONDON, COUNTY OF MIDDLESEX,

ENGLAND.

APPARATUS FOR THE PROPULSION, MOVEMENT, AND SUCTION OF AIR. FLUIDS ANDGASES.

SPECIFICATION forming part of Letters Patent No 336,215, dated February16, 1886.

Application filed June 12, 1885. Serial No. 168,168. (No model.) May.32,

To (ZZZ whom it may concern:

Be it known that I, CLARENCE WILLIAM GROssLEY, a subject of the Queen ofGreat Britain and Ireland, residing at London, in the county ofMiddlesex, England, draftsman, have invented anew and useful Improvementin Propelling Apparatus for the Movement of Air, Fluids, and Gases, ofwhich the following is a specification.

My invention relates to an improved apparatus for the propulsion,suction, and movement of air, fluids, and gases, and will be readilyunderstood on reference to the accompanying drawings, in which-- Figures1, 2, 3, 4, 5, 6, and 7 are diagrams illustrating the sheet of metalforming the propeller-blade and the manner in which it is cut and bent,together with modifications of the shape into which said blade may bebent, Figs. 5 and 6 showing, respectively, a side and face view of theblade. Fig. 8 is a side view illustrating a complete propeller, and Fig.9 a plan of the same.

I form my improved propeller by taking a piece of sheet metal of greaterlength than breadth-such, for instance, as is shown by A B O D, Fig. l.The length may be about twice the width. This piece of sheet metal Ibend slightly upon a line, 6 f, passing diagonally across its breadth,so as to make two equal or similar portions, into which the line dividesit. A section at right angles to e f will therefore appear, as shown inFig. 2. The angle that the line ef makes with the baseline 0 D acrossthe face of the metal sheet may be about forty-five degrees. The equalor similar portions A f e D and 13 f e 0, having been thus bent slightlytoward each other, are then one another, as shown in diagram, Fig. 3, orin the modification, Fig. 4, although I prefer the form shown in Fig. 3.The angle included within 0 b a, Fig. 3, may be about one hundred andten degrees, and the height from b to as about one-half the width of A Dor B C, Fig. 1. The curve of the blade may be continuous throughout, orit may vary at different parts of the surface of each of theabovementioned equal or similar portions. The

Patented in England July 14, 1884, No. 10,108, and in Belgium piece ofmetal forming the blade, having been thus bent and curved, will appearin side view as shown by Fig. 5, in elevation as shown by Fig. 6, and inplan or section as shown by Fig. 3 or 4.

The curving of the surfaces of the equal or 5 similar portions Af e Dand Bf e O is a very important feature of my invention, for if they bekept flat when bent toward each other there is a very marked reverse orreturn current of the air or other medium inwhich the appara- 6o tus isworking; but by curving them this re turn current is almost, if notentirely, done away with.

Instead of bending the piece of sheet metal on a line passing at anangle across its breadth, 6 this line may be an imaginary one, and thecurvature of each of the equal or similar portions may extend each sideof the imaginary line at a constant or varying rate over the two equalor similar portions. case would appear similar to Fig. 7. The two equalor similar portions may also be made of separate pieces of sheet or castmetal, curved as desired, and joined together at the line 6 f, or onemay be hinged to the other at the line e f, so as to allow of theirbeing adjusted by suitable means to vary the angle between them.

Having formed the apparatus of sheet metal, as above described, I fastenit to or on a shaft or spindle (see Figs. 8 and 9) in suchama-nner thatthe axis of the shaft will pass through the line a f, crossing thebreadth of the piece of metal, and will also bisect the angle includedbetween the two equal or similar portions, which have been made toapproach each other 8 5 in the above-described manner.

In Figs. 3, 4, 5, and 7 of the accompanying drawings the position of theaxis of the shaft or spindle is shown (by a dotted line) as horizontal,and the line ef, as seen in side view at 0 Fig. 5, is shown at rightangles to the axis. The shaft may be supported in bearings in the usualway, and rotated by any suitable means in the direction of the arrows,as shown in Fig. 6, in order to give motion to the air or other 5 mediumin the direction of the arrows, as shown in Fig. 5.

The above described apparatus may be A section in this 70 wholly orpartially surrounded by a cylindrical or conical case.

I do not confine myselfto the precise details, relative proportions, ordimensions, or to the precise angle or angles herein described or shown,as the same may be varied without departing from the invention.

I claim as my invention- The improved apparatus for the propulsion ormovement of air or other fluids, consisting of a revolving shaft and aplate of sheet metal that is affixed to said shaft, and is longer in onedirection than the other, and havingthe two portions or blades at anobtuse angle to each other, the line of the angle between the t5 bladesbeing diagonal to the plate, and the end portions of each blade curvedtoward each other, substantially as specified.

In witness whereof I have hereunto signed my name in the presence of twosubscribing 20 witnesses.

CLARENCE WILLIAM OROSSLEY.

